Cook veggie burger according to package directions. If the package has an oven method, it'd be preferable to use that (not to mention it saves you the washing of a frying pan).
Meanwhile, stir the Italian seasoning into the marinara sauce. I thought 1/2 a teaspoon was plenty for the Italian seasoning, but if you want more or less feel free to adjust it to taste.
Once the veggie burger is cooked through, remove it from the oven but keep it on the same baking sheet. Spoon a liberal amount of your sauce on top and spread it, being sure to save enough for the other side. Carefully flip the burger, spooning the remaining sauce over it and making sure the sides are covered as well.
Sprinkle vegan cheese over the top, following with another sprinkle of Italian seasoning if desired.
Bake again at 350F for 5-7 minutes, until cheese is melty and sauce is hot. You could also broil it for a minute or two to get the same cheese-melting effect. Enjoy!
Notes
You could also make a delicious parm sandwich by slicing the veggie burger parm in half and laying it on a nice toasted sub roll.